Welcome to the Science of SunRail, a website dedicated to the engineering marvel of trains. Here we dive into the science behind what makes them work, why they are so powerful and the importance of keeping off AND away from railroad tracks.

Once dry, tape this piece of paper to a table with the sand side facing up.

Tape the clean piece of paper next to the sand paper so they are side by side.

Place one quarter on each of the pieces of paper and using your pointer finger, try to slide the quarter across the papers at the same time. Did you notice how much slower the quarter moved across the sand paper? The friction from the sand slows down the quarter just like it slows the train wheel.

DOPPLER EFFECT

Find a long open area inside or outside with a friend. Stand as far away from your friend as you can and ask them to run towards you making the sound of a train. Did you notice how the sound changed when they got closer and after they passed?